Osiris typically appears in one of two primary forms. The first is that of a Mulan warrior with green skin, dressed in robes and bearing the crown of a king of Mulhorand. The second form is that of a royal mummy.[5]

The position of priest in the church of Osiris is usually hereditary; members typically belong to the House of Osriant, and can claim at least one divine incarnation of Osiris among their ancestors.[5]

Priests of Osiris spend much of their time traveling Mulhorand and settling disputes, leaving serious court matters to the clergy of Horus-Re. They also preside over burial procedures, and serve guardians of the Land of the Dead.[10]

Active worship of Osiris is small, though all in Mulhorand respect his teachings.[5]

Priests of Osiris usually wear linen skirts and sandals. They shave their heads and usually wear a headdress. They paint a series of three concentric blue circles on their forehead, a symbol of their priestly calling.[10]

When equipping for battle, clergy of the church of Osiris favor armor and other equipment appropriate to the situation.[10]

Drawn exclusively from those who have died in combat with servants of Set and been raised from the dead (sometimes spontaneously by the power of Osiris), they are primarily hunters (multiclass Paladins/Rangers of Set’s minions. They are casual towards death as they are granted the power to return from death unaided if killed by Set's minions with unjust or dishonorable means.[11][10]